On Jun 13, 8:32*pm, "SteveB" wrote:
What is the sequence of failure when an AC filter is not changed, left to
clog up, and the system fail? *Can someone who knows AC explain how this
works through the components.

Steve

I do not work with AC but I might be able to answer your question.
Inside air is moved by the blower over the cooling coils and into the
rooms.
If the filter is clogged then the air will not move freely and the
blower will have to work
harder making it susceptible to damage. As the air moves over the
cooling coils
heat is absorbed by the coils preventing them from freezing. If the
air flow is restricted
then there is a chance the coils will ice up further restricting the
flow of air and not
able to provide the volume to cool down your place.